The Republic of Ireland: DublinWaters between Ireland in the west, and Wales in the east is called Irish Channel – Irish Sea. The part that is located in the south of Ireland is known as the Republic of Ireland which was a genuine part of the United Kingdom.
The division of Ireland was when the United Kingdom of Great Britain and Ireland had separated Ireland in to: Northern Ireland and Southern Ireland in 1921, May the 3rdunder the Government of Ireland ordinance, 1920. Nevertheless, the declaration of the Independence Day of South Ireland was announced on 21of January, 1919 when the ceasefire was put into effect between Great Britain and South Ireland.
Located in the eastern side of the Island, Dublin is the capital and the largest city, the population of which equals to 4.9 million, 40% of whom resides in Dublin, the Greatest Area.
It has just a sole land shared with the United Kingdom’s Northern Ireland having an area of 499 km starting: from Lough Foyle to the north of Ireland, to reach Carlingford Lough on the northeast which stands as a barrier between The Republic of Ireland and Northern Ireland.
The two Irelands engage in One Travel Area, so Border marks are not clear enough: In 2021 The two Irelands have become participants in the European Single Market, so the border has been open for good purposes permitting for free influx of people as of 1923, and goods to pass in as of 1993 till now.